<?php

/**
 * mForge Framework
 *
 * LICENSE:
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * The license is bundled with this package in the file LICENSE.txt.
 * You may also obtain a copy of the License at this URL:
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 * @copyright  Copyright (c) 2011, Jonathan Hedrén
 * @author     Jonathan Hedrén <jonathan.hedren@gmail.com>
 * @license    http://www.apache.org/licenses/LICENSE-2.0 Apache License, Version 2.0
 */

namespace mForge\Modules\Menu;

class Helper extends \mForge\Helpers\AbstractHelper
{
    /**
     *
     * @var \mForge\Menu
     */
    private static $menus;

    /**
     *
     * @param array $menus
     */
    public static function setMenus(array $menus)
    {
        self::$menus = $menus;
    }

    /**
     *
     * @return \mForge\Menu
     */
    public static function getMenu($menuName)
    {
        return isset(self::$menus[$menuName]) ? self::$menus[$menuName] : null;
    }

    /**
     *
     * @param string $menuName
     */
    public static function renderMenu($menuName)
    {
        if (isset(self::$menus[$menuName])) {
            echo self::menuToHtml(self::$menus[$menuName]);
        }
    }

    /**
     *
     * @param Menu $menu
     * @return string
     */
    private static function menuToHtml(Menu $menu)
    {
        $html = '<ul>';
        $menuItems = $menu->getMenuItems();
        usort($menuItems, function (MenuItem $a, MenuItem $b) {
            if ($a->getWeight() == $b->getWeight()) {
                return 0;
            }
            return $a->getWeight() > $b->getWeight() ? 1 : -1;
        });

        foreach ($menuItems as $menuItem) {
            $url = \mForge\Helpers\Url::getBaseUrl() . '/' . $menuItem->getTarget();
            $html .= "<li><a href=\"$url\">{$menuItem->getTitle()}</a>";
            if ($menuItem->hasSubMenu()) {
                $html .= self::menuToHtml($menuItem->getSubMenu());
            }
        }
        $html .=  '</ul>';
        return $html;
    }
}